class Foo():
    def __init__(self):
        self.x = 0
        
    def doSomething(self):
        print('hi')
    def doSomethingElse(self):
        print("something")

class Bar(Foo):
    def __init__(self):
        Foo.__init__(self)
        self.y = 0
      
    def doSomething(self):
        print('alternative hi')
    
    def doSomething2(self):
        print('bye')